Musar su Proverbi 29:27

And behold the righteous abominate the evildoer, as it is stated (Proverbs 29:26), “The unjust man is an abomination to the righteous.” And with one who is not in the counsel of the sages - if he does not surely abominate him, nor surely curse him; he should also surely not bless him.

And you must know that the punishment of the fool that advocates guilt is only when he attributes a defect in a man who fears sin, [and] whose [evil] impulse seized him and he sinned and was guilty - as his practice and way is to regret his sins. And all the more so if the matter that he repented is known. But [regarding] the man whose path you have examined and he has no fear of God in front of his eyes and is also stationed on the bad path - it is a commandment to speak in his disgrace and to reveal his sins, and to make the ones involved with sin foul in the eyes of people, so that the souls of the ones listening will be revolted from bad deeds. And it is stated (Proverbs 29:27), “The unjust man is an abomination to the righteous.” And it is [also] stated (Proverbs 8:13), “To fear the Lord is to hate evil.” And they said (Sanhedrin 52a), “It is permissible to call an evildoer who is the son of a righteous man, ‘an evildoer, son of an evildoer’; and it is permitted to call a righteous man who is the son of an evildoer, ‘a righteous man, son of a righteous man.’”
And behold when you see a man who is saying something or performing an act, and one can judge the thing as him being guilty or being innocent: If the man is one that fears God, you have been obligated to judge him favorably in truth - even if the thing is closer to, and makes more sense to be, understood unfavorably. And if he is from the [group] in-between, that are careful about sin, but sometimes stumble over it - you must incline the doubt towards judging favorably, as our Rabbis, may their memory be blessed, said (Shabbat 127b), “One who judges another favorably is himself judged favorably.” And it is a positive commandment from the Torah, as it is stated (Leviticus 19:15), “you shall judge your countryman justly (betsedek, which can also be understood as, favorably).” And if the matter leans towards guilt - let the matter be a doubt to you, and do not decide it unfavorably. But if most of that man’s actions are evil, or you have examined that he has no fear of God in his heart - judge his actions or his words unfavorably, as it is stated (Proverbs 21:12), “The Righteous One observes the house of the wicked man; he subverts the wicked to their ruin.” And we have already discussed its explanation.

If a man revealed your sin, do not say, "Just as he revealed my sin, I will now reveal his sin," As it is said, "Thou shalt not take vengeance, nor bear any grudge" (Lev. 19:18). Neither may you boast and say, "Even though he has revealed my sin, I will not reveal his," for by so speaking you have already revealed the half of it. And this matter is a very great principle in the whole concept of reverence of God. But if the one who sins does not fear God then he is as one who throws off the yoke of the kingdom of Heaven from upon him, and if he does not guard himself against a single transgression which all the people of the city know to be a sin, then one does well to speak evil of him and to reveal his sins and to cause the sinner, to be odious in the eyes of the people, in order that the people may hear and despise him and set themselves apart from transgressions, as it is said, "An unjust man is an abomination to the righteous" (Prov. 29:27). And it is said, "The fear of the Lord is to hate evil" (Prov. 8:13). And they said, a wicked man who is the son of a righteous man may be called "a wicked man, son of the wicked," while a righteous man who is the son of a wicked man may be called "a righteous man, son of the righteous" — and precisely in this way is it permitted to shame him for the sake of Heaven. But a man who quarrels with another and intends to shame him for his own satisfaction and not for the sake of Heaven, may not reveal his sin (Sanh. 52a). And similarly if the one who reveals the transgression of his companion is himself a sinner, he should not reveal the wrong of another sinner, for he certainly is not revealing the secrets of the sinner for a good purpose. "But the talk of the lips tendeth only to penury" (Prov. 14:23).